Abstract: A motor includes a rotor, a stator, a bearing, a motor housing, a bearing holder, a bus bar assembly, and a circuit board. The bearing holder includes a holder protrusion and a bus bar cover. The bus bar cover is located on a lower surface of the holder protrusion and covers a terminal through hole penetrating the holder protrusion in an axial direction. The bus bar cover includes a cover portion. The cover portion covers lower end portions of a bus bar terminal and a circuit terminal, is tubular, and includes an open upper surface. The cover portion is closer to the motor housing than a tangent line that connects a protruding direction outer end of a lower end of the holder protrusion and a lower end of the motor housing.

Abstract: A motor includes a rotor, a stator, a bearing, a motor housing, a bearing holder, and a bus bar. The rotor includes an axially extending shaft. The stator radially opposes the rotor. The bearing rotatably supports the shaft. The motor housing accommodates the stator and opens to one axial side. The bearing holder holds the bearing and covers the opening of the motor housing. The bus bar is connected to the conductive wire drawn out from the stator and is located on the bearing holder. The bearing holder includes a recess radially outside of the bearing and including an upper surface recessed to the other axial side. The bus bar includes a base portion and a connection portion. The base portion is located radially outside of the recess and extends in the circumferential direction.

Abstract: A motor includes a rotor, a stator, a bearing, a motor housing, a bearing holder, a bus bar assembly, and a circuit board. The bearing holder holds the bearing to cover the opening of the motor housing, and includes a holder protrusion. The holder protrusion is located radially outside the motor housing and includes an axially penetrating terminal through hole. The bus bar assembly includes a bus bar terminal and a bus bar holder. The bus bar terminal is connected to the bus bar, extends axially downward, passes through the terminal through hole, and protrudes axially downward from the lower surface of the holder protrusion. The circuit board includes a circuit terminal extending axially downward, passing through the terminal through hole, protruding axially downward from the lower surface of the holder protrusion, and connected to the bus bar terminal.

Abstract: A motor includes a rotor, a stator, a bearing, a motor housing, a bearing holder, a bus bar assembly, and a circuit board. The bearing holder includes a holder protrusion protruding radially outward of the motor housing. A bus bar cover is attached to the lower surface of the holder protrusion. The bus bar cover covers the terminal through hole axially penetrating the holder protrusion. The bus bar cover includes a cover portion and a flange portion. The cover portion covers the lower end portions of the bus bar terminal and the circuit terminal, and is tubular with an open upper surface. The flange portion extends outward from the upper end peripheral edge portion of the cover portion and is fixed to the lower surface of the holder protrusion. The flange portion includes an annular flange projection protruding upward from the upper surface.

Abstract: A rotor includes a shaft extending in an axial direction, a rotor core including laminations stacked in the axial direction, and at least one caulking portion at a radial-directional inner side of at least one magnet to caulk the laminations to each other. At least one magnet is embedded in the rotor core. At least one fixing portion fixes at least portions of outer peripheral edges of the laminations to each other. The caulking portion, the at least one magnet, and the at least one fixing portion are all arranged to be intersected by a straight line which is on a flat two-dimensional plane extending in a radial direction and a circumferential direction.

Abstract: A rotor includes a shaft, a rotor core, at least one magnet, and at least one fixing portion. The shaft extends in an axial direction. The rotor core includes laminations, and at least one caulking portion. The laminations are stacked in the axial direction. The at least one caulking portion is located at a radial-directional inner side of the at least one magnet to caulk the laminations to each other. The at least one magnet is embedded in the rotor core. The at least one fixing portion fixes at least portions of outer peripheral edges of the laminations to each other.

Abstract: A rotor includes a shaft extending along a central axis, a sensor magnet positioned on one axial side of the shaft, a magnet holder that includes a circumferential wall which is open on another axial side and accommodates an end portion on the one axial side of the shaft and the sensor magnet therein, and a support wall positioned on the one axial side of the sensor magnet, the magnet holder being fixed to the shaft, and a filling that fills an inside of the circumferential wall. The sensor magnet is sandwiched between the support wall and the filling in an axial direction.

Abstract: A rotor includes a shaft, a rotor core, at least one magnet, and at least one fixing portion. The shaft extends in an axial direction. The rotor core includes laminations, and at least one caulking portion. The laminations are stacked in the axial direction. The at least one caulking portion is located at a radial-directional inner side of the at least one magnet to caulk the laminations to each other. The at least one magnet is embedded in the rotor core. The at least one fixing portion fixes at least portions of outer peripheral edges of the laminations to each other.

Abstract: A rotor includes a shaft extending along a central axis, a sensor magnet positioned on one axial side of the shaft, a magnet holder that includes a circumferential wall which is open on another axial side and accommodates an end portion on the one axial side of the shaft and the sensor magnet therein, and a support wall positioned on the one axial side of the sensor magnet, the magnet holder being fixed to the shaft, and a filling that fills an inside of the circumferential wall. The sensor magnet is sandwiched between the support wall and the filling in an axial direction.

Abstract: A glass cutter is provided which can form, using a wheel, a uniform crack in glass even when a projection or an earlier-formed scribe line is present on the glass. When the wheel is moved on the glass, a fracture layer is formed causing a rib mark to be formed below the fracture layer and a crack to be formed below the rib mark. To cut the glass, the crack is required to be formed uniformly. Applying a force to resist the rotating force of the wheel makes it possible to form a uniform crack even when a projection is present on the glass. This improves glass cutting yield.

Abstract: A glass cutter is provided which can form, using a wheel, a uniform crack in glass even when a projection or an earlier-formed scribe line is present on the glass. When the wheel is moved on the glass, a fracture layer is formed causing a rib mark to be formed below the fracture layer and a crack to be formed below the rib mark. To cut the glass, the crack is required to be formed uniformly. Applying a force to resist the rotating force of the wheel makes it possible to form a uniform crack even when a projection is present on the glass. This improves glass cutting yield.

Abstract: A glass cutter is provided which can form, using a wheel, a uniform crack in glass even when a projection or an earlier-formed scribe line is present on the glass. When the wheel is moved on the glass, a fracture layer is formed causing a rib mark to be formed below the fracture layer and a crack to be formed below the rib mark. To cut the glass, the crack is required to be formed uniformly. Applying a force to resist the rotating force of the wheel makes it possible to form a uniform crack even when a projection is present on the glass. This improves glass cutting yield.

Abstract: A motor includes a rotating portion including a sleeve portion and a stationary portion. The stationary portion includes a shaft component which includes an inner shaft portion and an outer shaft portion. A radial dynamic pressure generating groove array is provided on at least one surface of an inner circumferential surface of the sleeve portion and an outer circumferential surface of the outer shaft portion, which define the radial gap. The radial dynamic pressure generating groove array includes an upper radial dynamic pressure generating groove array and a lower radial dynamic pressure generating groove array. A range of a fixing region in an axial direction between the inner shaft portion and the outer shaft portion in an interference fit state is included in a range between the upper radial dynamic pressure generating groove array and the lower radial dynamic pressure generating groove array.

Abstract: A motor includes a rotating portion and a stationary portion. The stationary portion includes a shaft component which includes an inner shaft portion and an outer shaft portion, an upper plate portion, and a lower plate portion. The upper plate portion is disposed in one side of the shaft component and extends radially outward from the one side of the shaft component. The lower plate portion is disposed on the other side of the shaft component and extends radially outward from the other side of the shaft component. The rotating portion includes a sleeve portion. The inner shaft portion and the outer shaft portion are fixed by an adhesive. An adhesive retaining portion is provided between an outer peripheral portion of the inner shaft portion and an inner peripheral portion of the outer shaft portion.

Abstract: A motor includes a rotating portion including a sleeve portion and a stationary portion. The stationary portion includes a shaft component which includes an inner shaft portion and an outer shaft portion. A radial dynamic pressure generating groove array is provided on at least one surface of an inner circumferential surface of the sleeve portion and an outer circumferential surface of the outer shaft portion, which define the radial gap. The radial dynamic pressure generating groove array includes an upper radial dynamic pressure generating groove array and a lower radial dynamic pressure generating groove array. A range of a fixing region in an axial direction between the inner shaft portion and the outer shaft portion in an interference fit state is included in a range between the upper radial dynamic pressure generating groove array and the lower radial dynamic pressure generating groove array.

Abstract: A motor includes a rotating portion and a stationary portion. The stationary portion includes a shaft component which includes an inner shaft portion and an outer shaft portion, an upper plate portion, and a lower plate portion. The upper plate portion is disposed in one side of the shaft component and extends radially outward from the one side of the shaft component. The lower plate portion is disposed on the other side of the shaft component and extends radially outward from the other side of the shaft component. The rotating portion includes a sleeve portion. The inner shaft portion and the outer shaft portion are fixed by an adhesive. An adhesive retaining portion is provided between an outer peripheral portion of the inner shaft portion and an inner peripheral portion of the outer shaft portion.

Abstract: A motor includes a shaft component, an upper plate portion, a lower plate portion, and a sleeve portion. The shaft component includes an inner shaft portion and an outer shaft portion. The sleeve portion is disposed between the upper plate portion and the lower plate portion. A radial gap is defined between the sleeve portion and the outer shaft portion. A fixing range in which the outer shaft portion and the inner shaft portion radially overlap is provided. At least a portion in an axial direction of the fixing range radially overlaps with an existing range in the axial direction of the radial gap.

Abstract: A motor includes a shaft component, an upper plate portion, a lower plate portion, and a sleeve portion. The shaft component includes an inner shaft portion and an outer shaft portion. The sleeve portion is disposed between the upper plate portion and the lower plate portion. A radial gap is defined between the sleeve portion and the outer shaft portion. A fixing range in which the outer shaft portion and the inner shaft portion radially overlap is provided. At least a portion in an axial direction of the fixing range radially overlaps with an existing range in the axial direction of the radial gap.

Abstract: A bearing apparatus includes a stationary shaft, an upper annular portion, a lower annular portion, and a sleeve. An outer circumferential surface of the upper annular portion includes a cylindrical surface and an inclined surface arranged above the cylindrical surface. The cylindrical surface has an axial length smaller than that of the inclined surface of the upper annular portion. One of an upper surface of the sleeve and a lower surface of the upper annular portion includes a pumping groove array defined therein. An upper surface of a lubricating oil is defined in an upper capillary seal portion, while a lower surface of the lubricating oil is defined in a lower capillary seal portion. The upper capillary seal portion has an opening angle larger than that of the lower capillary seal portion.

Abstract: A motor includes a shaft component including an inner shaft portion and an outer shaft portion. A radial gap is defined between a sleeve portion and the outer shaft portion. A radial dynamic pressure generating groove array is arranged on at least one surface of an inner circumferential surface of the sleeve portion and an outer circumferential surface of the outer shaft portion, which define the radial gap. The radial dynamic pressure generating groove array includes an upper and lower radial dynamic pressure generating groove array. The inner shaft portion is fixed to the outer shaft portion in an interference fit. An axial range of a fixing region of the inner shaft portion and the outer shaft portion which is in the interference fit is included in a range between the upper and lower radial dynamic pressure generating groove array.